Web splicing device



Dec. 8, 1936. H. c. JORDHOY ET AL WEB SPLICING DEVICE Original FiledOct. 21, 1 933 5 Sheets-Sheet l Dec. 8, 1 936.

H. C. JORDHOY ET AL WQEB SPLICING DEVICE Original Filed Oct 21, 1953 5Sheets-Sheet 2 Dec. 8, 1936.

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Dec. 8, 1936. H. c. JORDHOY AL WEB SPLICING DEVICE Original Filed Oct.21, 1933 5 Sheets-Sheet 5 Patented Dec. 8, 1936 UNITED STATES AT E '1'OFFICE WEB SPLICING DEVICE Application October 21, 1933, Serial No.694,602

. Renewed May 5, 1936 18 Claims. (01. 242-58) This invention relates toa device for semiautomatically splicing a new roll of paper to therunning web of an expiring roll feeding into a printing press, withoutmaterially reducing the printing speed.

The embodiment of the invention shown herein is employed with aconventional magazine reel provided with a speeding-up device for theincoming roll incorporating the principles set forth and claimed in theprior application of Hans C. Jordhoy, Serial No. 652,679 and also abrush arm similar to that shown and claimed in the prior application ofHenry A. Wise Wood, Serial No. 650,121.

The objects of this invention are to provide improvements in each of theabove mentioned devices; to provide for building the driving mechanismfor the incoming roll into one of the reel spiders to move integrallywith that spider when it is shifted for rolls of different widths or forside register; to provide means for throwing out or disconnecting theroll drive mechanism when the peripheral speed of the incoming roll isthe same as the web speed which,

of course, is inversely proportional to the diameter of that roll; toprovide means whereby when the incoming roll has advanced enough tocontact with the traveling web, just prior to the splice, the positionof the reel at that time determines the instant of throw off for thedrive and regulates the speed of the incoming roll; to provide, inconnection with the arm which supports the brush or other means forengaging the web and backing it up when the web and new roll come intocontact, a limit switch connected to be operated by the web severingknife to bring the reel forward automatically after the knife has cutthe web from the expiring roll and after the said arm is released sothat it is allowed to rise, and to provide means whereby the raising ofsaid arm automatically resets the knife, which operation in turn causesthe limit switch to stop the reel from rotation.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. 1 isan end view of mechanism embodying this invention, showing the parts inthe position they assume just prior to splicing with the brush arm downin operative position, the web feeding off the expiring butt, and thenew roll just ready to contact with the web;

Fig. 2 is a fragmentary view of parts at the top and right hand of Fig.1;

Fig. 3 is a sectional view thereof taken on the line 33 of Fig. 1;

Fig; 4 is'a rear View of the brush arm complete;

Fig. 5 is an end view, opposite that shown in ,5 Fig. 1, of the brusharm showing the web and the new roll and illustrating details of the websevering knife;

Fig. 6 is an end view of the brush arm showing details of the latch forholding it in its 10 lowered or operative position and showing the limitswitch for preventing reversal of the magazine reel when the arm is inthe same position;

Fig. '7 is a sectional view showing details of the limit switchoperating mechanism mounte 5 on the brush arm;

Fig. 8 is an end View of the parts for controlling the operation of theroll separated from the rest of the mechanism;

Fig. 9 is a sectional view of one of the clutches 20 and its operatingmeans at the center thereof;

Figs. 10 and 11 are plans of the same showing two different positions;

Fig. 12 is a sectional View of another one of the clutches and itsoperating means; 25

Figs. 13, 14 and 15 are views, partly in section, showing details of thesolenoid tripped main driving clutch;

Fig. 16 is a sectional view on the line Iii-4B of Fig. 3 relating to thesame mechanism; '30

Fig. 17 is a horizontal cross section on the line I'l--E1 of Fig. l ofone leg of the brush arm with the operating handle knife release inplan, and

Fig. 18 is a wiring diagram.

It will be seen by reference especially to Fig. l 35 thatthe inventionis illustrated as applied to a conventional three arm reel having ashaft I supported by pedestals 2. Mounted on the shaft 1, slidablyfeathered thereto so as to be laterally movable for different widthrolls and for 40 measuring and correcting the margin of the printedproduct, are two three armed spiders 3. These spiders support the paperrolls inthe usual manner. The spider at one end differs from that at theother in that it incorporates 45 the mechanism for driving the incomingroll. The shaft l and spiders slidably keyed to it are rotated back andforth by the usual reel motor 4, driven throughits worm 5 and worm wheel6 mounted on the shaft 1, to place the fresh roll 50 R in the properposition for splicing. This motor is controlled through electricalconnections illustrated in the wiring diagram, Fig. 18.

The incoming roll R is prepared by cuttingthe leading end of the paperin a W as partially 55 shown in Fig. 3, the two points being held downby the Wood autopaster tab 99 which is a weakened gummed tab ofsufficient strength to hold the points down against windage andcentrifugal force and weak enough to be torn apart when the glue on theleading end of the incoming roll contacts the running web. The glue isapplied to the leading end of the incoming roll in a ribbon about 1 widein the conventional manner.

As shown in Figs. 4, 5, and 6, an arm or frame I is employed pivotallysupported by a shaft 8 mounted in bearings 9 bolted to the pressstructure. This arm in general is similar to that \shown in the abovementioned case 650,121. While it is called a brush arm, it will beunderstood that it is a movable frame for supporting any means forpressing the web against the incoming roll or backing up the web whenengaged by the incoming roll just at the time of splicing. As in theabove mentioned case, this brush arm I carries a line of brushes 10 forpressing the running web to against the incoming roll R. It also carriesa corresponding line of knives I3 for severing the web from the expiringbutt I4 and for controlling other functions, as will be described later.The arm I is oscillated by an operating handle 66 from its operativeposition which, in the form shown, is practically vertical to itsinoperative position at an angle of approximately 45.

In Fig. l a spring roller I5 is shown over which the running webtravels. This is mounted on the printing press I2, preferably, and isemployed to relieve sudden excessive strains on the web.

A stationary strap web tension device is shown consisting, in this case,of four straps I6 anchored to the floor or at the bottom of the machineat their lower ends. Above they are secured to the ends of four leverarms II. These arms are pivoted at their centers, each connected withone of the straps I6 and carry adjustable weights I8 on their otherends. These weights act independently of each other to maintain thetension on the straps. When the reel is run forward the running roll isbrought further into contact with these straps I6 thereby creatingtension on the web. The reason for employing a plurality of brushes andknives is to provide spaces between them for these straps.

One of the spiders 3 is provided with a hub I I on which is rotatablymounted a large gear I9 which meshes with smaller pinions 20, one oneach of the three or other number of roll spin dle shafts 2|. Eachpinion 20 turns freely on its spindle shaft 2| except when engaged withit by a clutch part 22 which is splined to the shaft. This clutch part22 is operated by trunnions 220 in a yoke on the lower end of a yokelever 23. This yoke lever is supported on a shaft 24 attached to thespider 3. On the lower extremity of the yoke lever 23 is a spring 25tending to keep the clutch engaged. The clutch part is normally held inthe disengaged position, as shown in Fig. 10, by a hand lever 26pivotally mounted at its center on a stud on the spider 3. Obviouslythis lever can be operated manually and is released just prior tosplicing. A notch on the end of the lever engages a suitable stud on theupper end of the yoke lever 23. The lever 26 is held by a spring 21 in aposition to .keep its notch engaged with this stud under normalconditions.

Fig. 11 shows this lever 26 and yoke lever 23 disengaged by the manualoperation of the lever and at this time the clutch part 22 comes intooperative engagement with the teeth on the pinion 20 to transmitrotation from the gear I9 to that spindle shaft 2I.

Referring again to Fig. 3, a member 28 is rotatably mounted on the hubII of the spider and bolted to the large gear I9, so as to turn it. Thismember 28 carries the projection 38 and an arm provided with a cam slot29 eccentrically arranged. This is employed in the driving of theincoming roll.

Movably mounted in the cam slot 29 is a roller 30 on a stud 3! carriedin a gear segment 32. This gear segment is mounted in bearings in anon-rotatable supporting housing 33 outside the other elements describedand located on the hub of the spider so as to move laterally with thespider. The upper end of this housing 33 is provided with flanges 340adapted to run on a guide rail 34 which runs across the press frame I2parallel with the shaft 1 and acts to allow the spider with its housing33 to be moved as a unit laterally but prevents the housing 33 fromrotating about its center. The gear segment 32 meshes with a pinion 35keyed to a shaft 38 which is mounted in bearings in the housing 33.

Turning freely on the shaft 36 is a gear 31 which meshes with an idler38 which in turn meshes with a pinion 39 splined to a shaft 40 extendingacross the press I2 parallel with the spider shaft I. The shaft 40 isdriven continuously by the press through a worm 42 connected with thepress and worm wheel 4|.

Movably splined to the shaft 36 is a clutch 43 which may be engaged withcomplementary clutch teeth on the loose gear 3'I. t will be rememberedthat this gear rotates continuously independently of the shaft 36. Thisclutch 43 is operated by trunnions on a yoke lever 43 supported onshafts and bearings bolted to the housing 33. A tension spring 45attached to the lower end of the yoke lever tends to keep the clutch 43engaged with the clutch teeth on the gear 31. This clutch member 43 isadapted to be engaged by a solenoid 5| which operates a dog 46.

Keyed to the shaft 36 is a earn 4?, the high point of which engages aroller 48 carried on a transverse arm on the yoke lever 44 to positivelythrow the clutch 43 out. This high point on the cam is so located as tothrow out the clutch just before the completion of one revolution of theshaft 36. After being thrown out it is held out by the dog 46 which hasa notched end for that purpose, as shown in Fig. 13.

Figs. 13, 14 and 15 show the connection of the solenoid 5| with the dog46. The dog is pivotally mounted at its center on a stud 49 located inbearings on the housing 33. One end, as stated, has a notch to engagethe yoke lever 44 and the other end is drilled to allow a rod 53 to passfreely through it. The upper end of this rod is attached to the plungerof the solenoid and on the lower end is an adjustable stop nut 52. Aweight 53 is slidably mounted on the rod above the stop nut and placedbetween it and the dog 45. The stop nut 52 is so adjusted that normallythe weight 53 just clears the dog 46 when the solenoid is energized andits plunger is drawn up. When this occurs a sudden thrust throws theweight 53 against the end of the dog, releasing its notch on the otherend from the yoke lever 44 and allowing the spring 45 to move the yokelever 44 inwardly to connect the clutch. This arrangement connects theshaft 36 with the gear 3'! so thatit will rotate with it and insuresthat the dog 46 will not be held up by the solenoid 5! even though itremains energized. The dog, therefore, is in a position, as soon as theweight 53 drops by gravity against the stop nut 52, to hold the clutch43 out as soon as it has been opened again by the cam 41. In this casethe yoke lever 44 moves over to the position shown in Fig. 13 and thepreponderant weight of the other end of the dog 45 swings it up intolocking position.

The arm l for supporting the brushes or other means for making thepaster is in the form of a frame substantially the width of the web. Thebrushes five in number in the present case, extend the full width of theweb except for the four spaces which allow them to drop between thetension straps l6. Also on the brush arm in its lower extremity are fiveknives I3 arranged in a similar way, all secured to ashaft 54 which ismounted in bearings 55 of the brush arm. On the shaft 54 are two torsionsprings 55 for rotating the knife out at right angles into operativeposition. One end of one spring 56 fits in a hole in a collar 5t securedto the shaft 54. The other end fits in a hole in the knife shaft bearing55. When the brush arm is lifted into inoperative position the knife isreset or rotated into a parallel position with the brush arm against thetorsion of the spring 56 by a crank 51 secured to the knife shaft 54.This crank is operated by a rod 58 pivoted to the press structure. Therod 58 loosely fits into a poppet 59 on the crank 51 and stop-nuts 60 onthe rod are adjusted so that the knife is reset when the arm 1 iselevated.

When the arm is lowered the knife is held in this reset position by anotched segment 6| secured to the shaft 54, as shown in Fig. 5. Inlowering the brush arm the'resetting rod travels freely through thepoppet 59. The notch in the segment 6| engages a rod 52 which isspringpressed downwardly by a spring 63 with a stop collar 54 secured tothe rod. This rod 62 is raised manually by a lever 65 pivotallyconnected with it to release the knife when desired. The shaft 8 haskeyed to it an operating handle 66 for turning it and it is on thislever that the lever 65 is pivoted.

Since the brush arm I oscillates slightly relative to its operatinghandle 56 when the incoming roll strikes the brushes,.it is necessary toprovide a loss motion connection somewhere between the knife releaselever 65 and the knife release rod 62. This rod, it will be remembered,is mounted on the brush arm while the release lever 55 is mounted on theoperating handle 55. Fig. 17 shows the upper end of the rod 62 asslidably mounted on a pin or stud 65 carried in the forked end of thelever 65 and slidable laterally thereon. Therefore, when the brush armis moved out by the pressure of the incoming roll against the brushes,this red 62 is free to move forward and back on this stud 65 and permitlimited amount of motion of the brush arm relative to the knife releasemember 65.

As stated, the brush arm 1 is pivotally mounted on the shaft 8 and keyedto that shaft, besides the brush arm operating handle 66, are two levers61 at the opposite ends of the brush arm. To each of these levers 6"! ispivotallx, connected a rod, 68 extending substantially at right anglesto the length of the lever. This rod passes loosely through a poppet 69pivotally secured to the brush arm I. On the rod 58 is a spring 10,adjusting nuts H and a stop collar 12. The spring in presses against theadjusting nut H and the poppet 69, holding the poppet against the stopcollar. This yieldingly presses the brush arm 7 against the two levers61 so that, except for the yielding pressure, the 7 brush arm 1 turnswith the shaft 8.

On the extreme lower ends of the lever arms 61 are projections 575 forstriking the rollers l3 on two limit switches 13 mounted on the brusharm.

As will be described later, the incoming roll R strikes the running webwand forces it against the brushes paster is about to be made. Thiscauses the brush arm to spring back the compressing spring 10, thusallowing the projections fil to operate limit switches 13. As theselimit switches are so connected that the motor circuit is broken themotor and reel are stopped. The adjusting nuts ll are turned to adjustthe springs 10 to such an extent that the limit switches will beoperated when the correct pressure is obtained between the brushes l0and the incoming roll R with the web between them.

For the purpose of counterweighting the brush arm it is provided with asegment 81'] meshing with a pinion 19 on a shaft 18 mounted in bearingscarried on the press frame 12. This shaft carries an arm 16 having aseries of perforations into one of which a stud 71 is placed. This studis adapted to receive a loop on a strap 15 which carries a counterweight74. This counterweight is adjustable by removing one or more of itsseparate weights. The segment and pinion are so proportioned and thestud H so placed in one of its perforations that the weight M will holdthe brush arm down when it is placed in its lowermost position and willalso hold this arm up when it is raised, because the crank arm 16 willthen pass over its dead center, as indicated in dotted lines in Fig. 1.

The mechanism on the brush arm operating handle 56 on the arm isarranged on the arm so that the armcan be unlatched only when pressureis taken off the latch by manual downwardpressure on the handle 66. Forthis purpose hand gripped toggle 8! is mounted on the lower extremity ofthe handle 66 and held open by the spring 82. A rod 83 on the handle 68is arranged for holding the brush arm i in its lowered operativeposition. This rod 83 is arranged in substantially vertical position anddrops by gravity against a shoulder on the hand gripped toggle 8|. Whenthe brush arm is down and the toggle 8| released the rod 83 enters thenotch in an adjustable sector 34 carried adjustably in a housing 85carried by the press frame 12. In order to adjust the length of the rod83 it is shown as made in two pieces threaded into each other and lockedby the lock nut 86. A limit switch 81 is adapted to be operated by a pin88 actuated by a cam 89 mounted on the knife shaft 54. This operation isperformed so that a circuit is closed when the knife is released andopened when the knife is reset. This limit switch is wired in parallelwith the forward reel push button 93 to automatically run the reelforward and bring the new roll against the tension straps, with the webbetween, after the paster has been made.

Also there is a limit switch 99 in series with a reverse button 94mounted in the housing 85.

I01 on the brush arm when the g A cam 9| fixed on the shaft 8 is set tooperate the limit switch 99 so that a circuit is opened when the brusharm 7 is located in the downward position and closed, as far as thisswitch is concerned, when the arm is up. The reason for wiring thisswitch in series with the reverse push button 94 is to prevent thepossibility of breaking the arm by reversing the reel when the arm isdown.

The wiring diagram has been described in part. It shows electricalconnections for the paster and a conventional reel motor 4 and reelcontroller. Power is supplied through the switch 95. The closing ofeither or both of the brush limit switches 13 causes the contactor 96 toclose. This in turn opens the circuit to the forward push button 93 andthe limit switch 81 to prevent the reel motor a from being run furtherforward. In closing, the contactor 96 also closes a circuit to theclutch solenoid 5| to energize it. The knife limit switch 8'! is wiredin parallel with the forward reel button 93 and is mechanically operatedby the web severing knife 13 to close the circuit when the knife istripped and open it when the knife is reset. This causes the reel to runforward whenever the knife is tripped and the contactor 98 is opened.The reverse limit switch is wired in series as stated with the reelreverse button 94 so that both of them have to be closed in order toreverse the reel. The limit switch 90 is operated by the brush arm 1 sothat it is open when the arm is down and closed when the arm is up. Thisinterlocks the reel so that it cannot be reversed when the arm is down,thereby preventing damage to the arm.

Operation When the running roll l4 becomes small and just prior to itsexpiration, the brush arm is lowered manually by its operating handle 66and is automatically locked down by the rod 83 being forced up by thespring 82 into the notch of the sector 84. The incoming paper roll R isrotated backward until the heel of the paste approaches closely to thebrush, as shown in Fig. 5. The spindle clutch 22 is then manuallyengaged by the releasing member 26 allowing the spring 25 to throw theclutch 22 into engagement with the pinion 20.

When the operator decides that the moment for making the paster hasarrived, he presses the reel forward button 93 and the reel rotates in aforward direction until the incoming roll R contacts with the runningweb to and presses it against the brushes i0, which are in stationaryposition at this time. As the brush arm Ii is yieldingly mounted throughthe springs 10 it moves back compressing these springs and causing thearms 6'! to throw the limit switches 13'.

nto closed position.

As will be seen by reference to the wiring diagram the closing of theseswitches 13 causes he contactor 95 to be energized closing the circuitat Ifll and opens it at Hill. This stops the reel from further advanceand energizes the clutch solenoid 5!, thus throwing the weight 53 up torelease the dog 46. This allows the spring 65 to cause the clutch 43 toengage with. the gear 3! and transmits power from the shaft 5?) to theshaft 36 and to the roll spindle 2!. The pinion 35 will make onerevolution only and then its cam A! will throw out the clutch. Theotation of the gear 32 through a partial revolution causes the roller 30to ride in the slotted cam 29 and to turn. With it the gear l9 turns andthe pinion 20. As the slotted cam 29 sweeps around, the projection 98attached to the member 28 strikes the upper end of the yoke member 23forcing the clutch 22 open against the resistance of the spring 25. Whenthe clutch 22. is once opened it is held open by the lever 26, latchedinto place, as shown in Fig. 10. The disengagement of the clutch 22takes place just prior to the disengagement of the clutch 43.

The position of the spider 3 when the roll R strikes the brush and stopsthe reel is determined by the diameter of the roll R. The nearer thespindle, on which the incoming roll R mounted, is located to the brusharm, the longer the travel of the slotted cam 29, before the projection98 will contact with the yoke lever 23 and therefore the greater thespeed of the incoming roll. The slotted cam 29 is so proportioned as togive a uniform acceleration to the roll R. and the projection 98 is solocated that when it contacts the clutch yoke lever 23 the speed of theroll R will be approximately equal to the speed of the web. In thismanner the position of the reel is used to determine the speed ratio orthe incoming roll.

When the pasted leading edge of the roll R contacts with the running webw the autopaster tabs 99 will be torn apart and the web of the incomingroll attached to the running web so that both webs will be fed into thepress. When the operator sees the second web attached he presses theknife release handle 65 which drops the knife and severs the web w fromthe butt l4 and closes the circuit in the limit switch 81. The closingofthis switch will perform no present function, as will be seen by thewiring diagram, until the limit switches 13 open. Then the contactor 96will open completing the forward reel circuit and. deenergizing theclutch magnet 5|. The brush arm is released by grasping the toggle 8| onhandle 66 and pressing it forward, thus allowing the rod 83 to drop bygravity out of the notch in the sector 84.

It will be apparent therefore that the reel will then go forwardbringing the roll R into the tension straps I6. Tension will be held onthe web from the roll R by the counterweights 14 which, at this time,tend to hold the brush arm in its lowered operative position. As thereel runs forward it causes the brush arm 1 to rise. Raising the armresets the knife l3 which in turn opens the limit switch 8'! and causesthe reel to stop, the paster having been completed. When the cam 41releases the main driving clutch member 28, which carries the slottedcam 29 and projection 98, this member 28 will be returned to itsstarting position by a spring H12 attached thereto.

It will be seen therefore that the entire apparatus is back now in itsstarting position ready for making another paster on the next succeedingroll.

Although we have illustrated and described only one form of theinvention We are aware of the fact that modifications can be madetherein by any person skilled in the art without departing from thescope of the invention as expressed in the claims. Therefore, we do notwish to be limited in this respect otherwise than as set forth in theclaims, but what we claim is:-

1. In a web splicing device, the combination with a. printing pressframe to which the web is fed, said frame having a stationary guide railextending transversely, of a shaft parallel with 75 the guide rail,spiders carried by said shaft and constituting therewith a reel for theweb rolls, one of said spiders being movable along the shaft, a shaft onthe press frame adjacent to said rail, a housing connected with thefirstnamed shaft for engaging said rail to guide the spider thereby whenthe spider moves, a gear on said press frame shaft, a shaft carried bythe housing, means for driving the last named shaft from said gear, asegment carried by the housing, means for oscillating the segment fromthe housing shaft, and means operated by the segment for turning thespindle of the fresh web roll to speed it up prior to splicing, thelast-named means being carried by the spider.

2. In a web splicing device, the combination with a printing press frameand a reel comprising a rotatable shaft and spiders carried by theshaft, of a shaft carried by the printing press frame, means forrotating the last-named shaft from the press, a housing supported by theshaft of the reel in'non-rotatable position, a shaft carried by thehousing, means detachably connected with the last-named shaft forrotating it with the printing press shaft, a segment connected with theshaft on the housing to be turned thereby, a series of web roll spindleson the reel, each having a loose gear thereon, means for connecting saidloose gear with its spindle and disconnecting it therefrom, and meansconnected with said segment for turning said loose gear for the purposeof rotating the fresh web roll approximately to web speed from the shafton the press.

3. In a web splicing device, the combination with a rotary reel forsupporting the web rolls and a spindle shaft on the reel for each webroll, of a driving means for turning the spindle shaft for the new webroll comprising a rotary segment having a cam roller mounted to turn instationary bearings, a gear mounted to turn on the reel, a transmittingmember comprising a curved cam for receiving said roller fixed to thegear and having such shape as to bring the surface of the fresh web rollup to substantially web speed, a clutch for disconnecting the gear fromthe spindle shaft, and means movable with the cam for throwing theclutch out when the fresh web roll rotates at substantially web speed.

4. In a web splicing device for a printing press, the combination with areel having a plurality of spindle shafts thereon for supporting aplurality of web rolls, of means operated by the press for rotating eachof said spindle shafts on its own axis when it is carrying the fresh webroll, a clutch for throwing out the connection of the spindle shaft withsaid means, said clutch having a lever for throwing it out, and a memberrotatable on the axis of the reel but at a different speed for engagingsaid lever and throwing the clutch out when the spindle rotates fastenough to bring the surface of the fresh web roll up to web speed.

5. In a web splicing device, the combination with a printing press frameand a shaft thereon driven by the press, of a reel having a shaft, ahousing mounted in non-rotatable position on the shaft and the pressframe, a third shaft on the housing, gearing carried by the housing fortransmitting the rotation of the first-named shaft to the third shaft, aclutch for connecting said gearing with the third shaft, means driven bythe clutch for rotating on its own axis a fresh web roll carried by saidreel, and means for throwing the clutch out at the end of a completerotation of said third shaft.

6. Ina web splicing device, the combination with a printing press frameand a shaft thereon driven by the press, of a reel having a shaft, ahousing mounted in non-rotatable position on the shaft and the pressframe, a shaft carried by the housing for transmitting the rotation ofthe first-named shaft, a clutch for connecting the first shaft with; thethird shaft, means driven by the third shaft for rotating on its ownaxis a fresh web roll carried by said reel, means for throwing theclutch out at the end of a complete rotation of said third shaft, apivoted dog for holding the clutch out, a spring tending to close theclutch, a solenoid adapted to operate the dog to release it from theclutch, and means whereby the circuit of the solenoid will be closed bythe rotation of the roll-driving means to energize it.

7. In a web splicing device, the combination of a shaft, a gear loose onthe shaft, means for transmitting power to the gear, a clutch forclutching the gear to; the shaft, means for throwing the clutch out uponthe completion of a revolution of the shaft, a spindle shaft for a freshweb roll movable bodily along a course toward splicing position, meansfor transmitting the rotation of the first-named shaft to the spindleshaft when it is adjacent to splicing position, and means for holdingthe clutch out.

8. In a web splicing device, the combination of a shaft, a gear loose onthe shaft, means for transmitting power to the gear, a clutch forclutching the gear to the shaft, means for throwing the clutch out uponthe completion of a revolution of the shaft, a spindle shaft for a freshweb roll, means for transmitting the rotation of the first-named shaftto the spindle shaft when the spindle shaft is substantially in positionfor the web to be spliced, a pivoted dog for holding the clutch out, asolenoid having a depending rod with a stop on the end of the rod, aweight loosely mounted on the rod above the stop, said dog having a tailextending above said weight, whereby, when the rod is pulled up by theenergizing of the solenoid, the upward throw of the weight will engagethe tail of the dog, disconnect the dog from the clutch, release theclutch and cause the solenoid to'be denergized.

9. In a web splicing device, the combination with a rotary reel forsupporting a fresh web roll, means for rotating the reel, and a movablearm between which and the fresh web roll the web from the running rollpasses, of a lever mounted to move relatively to the movable arm,yielding means for connecting the lever and the arm for permitting arelative motion when the web roll on the reel moves against the web andforces the web and the arm back, and electrical means actuated by saidmovement of the arm relative to the lever for stopping the reel rotatingmeans, whereby the time at which the reel is stopped is determined bythe diameter of the fresh web roll.

10. In a, web splicing device, the combination with a rotary reel forsupporting a fresh web roll, means for rotating the reel, and a movablearm between which and the fresh web roll the web from the running rollpasses, of a lever mounted to move relatively to the movable arm,yielding means for connecting the lever and the arm for permitting arelative motion when the web roll on the reel moves against the web andforces the web and the arm back, electrical means actuated by saidmovement of the arm relative to the lever for stopping the reel rotatingmeans, means for rotating the fresh web roll on its axis, said meanscomprising a rotary cam and a roll operating on the cam, means formoving the roll to actuate the cam, and means for transmitting themotion of the cam to the fresh web roll to rotate it.

11. In a web splicing device, the combination of an arm pivoted to swingon a horizontal axis, means on the arm for backing up the web when afresh web roll moves against it, a

counterweight adjustably connected with said arm, and means whereby thecounterweight will hold the arm either in operative position to back upthe web or in inoperative position.

12. In a web splicing device, the combination of an arm pivoted to swingon a horizontal axis, means on the arm for backing up the web when afresh web roll moves against it, a counterweight adjustably connectedwith said arm, a segment fixed to move with the arm, a shaft parallel tosaid axis and having a pinion thereon, and an arm projecting therefrom,the last-named arm having means by which the counterweight can beconnected to it in adjusted positions, said last-named arm being adaptedto hold the first arm in either of its two extreme positions, for thepurpose described.

13. In a web splicing device, the combination of a swinging arm, meanson the arm for backing up the web, a reel carrying a fresh web roll,means for moving the reel to bring the fresh web roll into contact withthe web and force it against the backing up means, a contactor movablewith the arm, a limit switch connected with the contactor to close it,means whereby, when the contactor closes, a circuit will be opened, andan additional limit switch in the circuit in position to prevent thereel from being run forward thereafter.

14. In a web splicing device, the combination of a swinging arm, meanson the arm for backing up the Web, a reel carrying a fresh web roll,means for moving the reel to bring the fresh web roll into contact withthe web and force it against the backing up means, a contactor movablewith the arm, a limit switch connected with the contactor to close it,an additional limit switch, a solenoid adapted to be placed in thecircuit by the closing of the last-named limit switch, and meansoperated by said solenoid for connecting up the spindle shaft of a freshweb roll with a source of power to rotate the roll on its axis up to webspeed.

15. In a web splicing device, the combination of a swinging arm, meansfor backing up the web on said arm, a reel for supporting a fresh webroll, a reverse limit switch operated by the motion of the arm betweenoperative and inoperative position so that when the arm is down inoperative position, the limit switch is open, a motor for operating thereel, said limit switch being connected with the circuit of the motor toreverse it when closed, whereby the reel is interlocked when the arm isup in inoperative position so that the reel cannot be reversed when thearm is down in operative position.

16. In a web splicing device, the combination with a rotatable magazinereel for mounting a plurality of web rolls, a fresh web roll and arunning web, and power-operated means for accelerating the fresh webroll in less than one revolution so that its periphery will travel atthe speed of the running web, of means for regulating the speed ofangular rotation of the fresh roll with respect to the rolls diameter.

17. In a web splicing device, the combination of a rotatable magazinereel for mounting a plurality of web rolls, means for rotating the reel,a fresh roll, a running web, and power-operated means for acceleratingthe fresh web roll in less than one revolution so that its peripherywill travel at the speed of the running web, with means controlled bythe angular position of the reel for regulating the speed of the freshroll.

18. In a web splicing device, the combination of a rotatable magazinereel for mounting a plurality of web rolls, means for rotating the reel,a fresh roll, a running web, power-operated means for rotating the freshroll, and web-pressing means, with means for starting the web rollrotating means when the fresh roll presses the web against theweb-pressing means.

HANS C. JORDHOY. CHARLES L. RICARDS.

